It depends. Lone Bay sits around 19.0°C in May; confident swimmers will be fine, casual bathers may prefer short sessions.
Monthly averages set expectations, but the specific beach today depends on wind, swell and recent weather. Check the live value at the top of this page or open the Lone Bay live page for full conditions.
Best months to swim
June · July · August · September
Frequently asked questions
What is the average sea temperature at Lone Bay in May?
Lone Bay averages 19.0°C in May, based on long-run climatology for the Adriatic Sea.
Is the sea warm enough to swim at Lone Bay in May?
It is swimmable but fresh; confident swimmers will be fine without a wetsuit.
Do I need a wetsuit at Lone Bay in May?
A 2 mm shorty is comfortable for sessions over 30 minutes.